An alloy of copper and tin is 20% cooper. How many pounds of copper must be added to 20 pounds of the alloy in order that the resulting alloy may be 50% copper?
6
7
13.4
5
32.
A man sold an article at a gain of 15%. Had he bought it at 10% less and sold it for Rs. 14 less, he would have gained 20%. Find the cost price:
RS. 200
RS. 180
RS.164
RS.400
33.
By selling a horse for Rs. 540 a man gains 20 per cent. He sells in for only Rs. 468. Find his profit or loss per cent:
7%
9%
4%
12%
34.
How many minutes will it take a train traveling at the rate of 45 miles per hour to cover a distance of 4/5 miles?
1.88
2.37
1.07
3
35.
. If 3 apples cost 19 paisas, how many apples can be purchased for Rs. 1.52:
87
24
56
17
36.
Divide 936 in three parts so that 3 times the first, 4 times the second and 6 times the third are all mutually equal:
416,312, 208
477, 399, 219
502, 401, 289
499,389, 299
37.
18 packers make up 90 parcels in 12- 1/2 minutes. How many parcel could 23 packers make in 7 1/2 minutes:
59parsals
69 parsals
10 parsals
68parsals
38.
If 6 pumps raise 108 liters of water in 12 minutes. How long will 4 pumps take to raise 96 litres?
10min
20min
30min
16min
39.
A sack of rice will feed a family of 4 persons for 30 days. how long would it feed 20 person:
5days
6days
9days
3days
40.
A motorist traveled 195 km in 3 hours. How far did he travel in 4 1/2 hours?